Spinning, twisting, and like machine



Jan- 1, 1952 J. c. GARNETT SPINNING, TWISTING AND LIKE MACHINE Filed Jul18, 1949 3 She ets-Sheet l Jan. 1, 1952 J. C. GARNETT SPINNING, TWISTINGAND LIKE MACHINE 3 Sheets-Sheet 2 Filed July 18, 1949 Jan. 1, 1952 J. c.(BARNETT TWISTING AND LIKE MACHINE SPINNING 3 Sheets-Sheet 3 Filed July18, 1949 v ,n: 3 3, 8 Y Y 2 w 2 I! w NA :HU a 8m m n I a m ww v I a 3 wm 5 a 7 m 3 6 3 Patented Jan. 1, 1952 SPINNING, TWISITING, AND'LI'TKEMACHINE James Clifford Garnett, Darkfauldylslai ggowrie, Scotland,assignor. of one half to Baxter Brothers land & CompanyLimited,l)'undee, Sci'it Application July 18, 1949,;smaist.105357 InGreatBritain Jnlyfil, 1948 Thisinvention relates to spinning, twistingand like machines and refers more particularlyto the laying of the yarnor other material on to the bobbins, spools or pirns.

It has for its chief object to provide improved means for automaticallyproviding a length or tail-of yarn on each bobbin or the like during thespinning, twisting or like process, so that both ends-ofthe yarn thereonare-available for securing' to the outer end of the yarn on anotherbobbin orthe like to facilitate production in subsequentprocesses. I v

:It hasalready beenproposed'in a yarn windingmachine to provide bobbinsor the like with these tails which areknown as transfer tails.

ln one known arrangement, in order to provide'a tail, it has beenproposed to provide the barrel 'of-a flanged bobbin with an extensionbelow the bottom flange thereof for the reception-cf the transfer tailandtoprovide a device comprisingmeans for holding and driving the bobbinand a guide movable beyond the flange of the bobbin and adapted to carrythe yarn over the edge of the flange so as to bring the yarn intocontact with the extension and to cause a small amount of yarn to bewound on the extension for use as a transfer tail. The yarn isautomatically severed :when the tail' is formed. In this arrangement thetail forming operation iscontrolled byomovement of a hand lever andrequiresthe attention of an operative.

In another known arrangement for producing a transfer tail on ailangedbobbin in a ring-spinhingirame it has been'proposed to providethe lower flange ofthe bobbin with a peripheral groove to accommodatethe transfer tailand a plurality of grooves formed on the inner face of.said flange communicating with the peripheral-groove for leading theyarn into and out of the'fperip'heral"groove; a series of shallow slotsbeing 1 disposed circumferentially about the flangegthese slots servingasmeans for severing andeng'aging they'arn when it-is held against them.Vat'a time when the bobbinjis rotating at high speed; v a v v Thisarrangement isadapte'd-for use with the yarn guiding device -hreinbefore referred to as. forming part of the-first ,known arrangement,Further 'in a ring spinning frame ithas sen proposed-to form'a transfertall at the uppr jend of the bobbin, the arrangement requiring theattention bf and manipulatio'n'by an operative.

I lO'ne ofLthe objects of the present inventionjis to; provide: means,in a spinning, twisting or like machine; for automatically forming thetrans- 1001m (Chet-" 54) ingoper'ation unnecessary.

erratum eats the' bobbins, severing'theyarn to l for m the tail andholding the severed tall against lashing out under centrifugal action.all these operations being perfo med?sutematicany Without the necessityor stop ing the machine or the intervention of an operative.

Another object of the invention is to provide an'imp'roved automatictransfer tail-formingand yarn seve'ring device particularly adapted foruse with a spinning or'like textile frame of the kind wherein the filledbobbins are doffed and re placed by empty bobbins, ,th'connecting yarnflb'ni the previously filled bobbins remaining 1111 severed while apositive start is being effected on'th'e empty bobbins occupying thesame spindle positions as those of the previously filled bobbins, andissubsequently slashed. fHeretofore in a spinning frame of the lastmentioned type it" has been necessaryto stop the spinning operationafter astart on the new bobbins has been made to allow the slashing ofthe yarn conne'cting'the filled bobbins in the 'dofling position with.the empty bobbins invthe spinning position slashing operation is usuallydone by an operative whoprbceeds along the frame with aknife andcuts allthe jyar'ns "as they lie 'inpo'sition over aslasher bar.

Another Object ofth'e 'ln'viltiohis to refidl. the use of the slasherbar and the hand nasng the invention is: v particularly adapted for usewith fiyer spinning framesit also adaptameto ring Or cap'spinningframes;According to the invention in a'spinning twist-1 ing or'like' framepreferably having dofling m'ech' anism of the kind hereinbeforereferrdtoand wherein the flanged bobbins are carried on hold ers rotatablymounted on fixed s indles arried on a'builder,'means are provided forcatching the yarnj'oining "an empty or unfilled bobbin} the spinningposition and armed bobbin the doffing position, during therotation'ofthe rm: filled -bobbin by 'the'yarn winding -'device and leading theyarn so that. it is wound round tlie outer-"peripheryof the lower flangeon theum filled bobbin and is :then automatically presented to asevering device. j a

With this arrangement the, yarn is cut-leave ing'a-length.wrappedroundthe periphery of the lower flange to form thetransferttail, the spin;-ning proceeding tofillthebobbin in the-usual manner..- v e "'M'eans arealso provided for oatehing thev tail and preventing it from ,lashing outunder cen trifugal 7 action. 7 The {formation and severing of thetransfer tail is accomplished automatically without stopping the frameand without the intervention of an operative. In one arrangementaccording to the invention, a single helical groove is provided on theperiphery of the lower flange of the bobbin which as the empty orunfilled bobbin rotates leads the yarn so that it is wound round theouter periphery of the flange. After being wound round the flange, theyarn is caught in a second guide member arranged on the bobbin holder.This second guide means positively guides the yarn into such a positionas to present a portion of the yarn under tension to a fixed blademounted at a suitable point on the builder or on the base of the spindlecarrying the holder. In this manner, as rotation of the holder continuesthe yarn is severed so that a transfer tail substantially of the lengthof the circumference of the bobbin flange is formed. If desired, theperiphery of the lower flange of the bobbin may be formed with acircumferential groove communicating with the helical groove to assistin retaining the transfer tail on the flange during subsequent transit.

This second guide member may consist of a pressed metal cap, secured tothe bobbin holder beneath the bobbin, the bobbin seating in a recess onthe top of the cap. At a suitable point, the periphery of the cap is cutand slotted to form guide fingers arranged to catch the yarn afterit'has been wound round the periphery of the the flange to form thetail, and to present a portion of the yarn under tension to the fixedblade. The blade may be carried on the usual drag adjuster plate beneaththe bobbin holder, or if no drag adjuster is used, on the builder whichcarries the spindles on which the bobbins are mounted. The cap isarranged to form a guard for the blade. Further, the above-mentionedguide fingers are soarranged that after severance, the end of the tailis held down and cannot fly outwards or unwrap from the bobbin. Also thesecond guide member may be formed integrally with the base of the bobbinholder instead of in cap form. It will be noted that the above-describedarrangement includes the formation of an helical groove in the lowerflange of the bobbin; In a modification the helical groove is dispensedwith and the yarn is caught and guided to the outer periphery of theflange'by means of a catch consisting of an upright member fixed in therecess in the aforesaid cap in the clearance between the bobbin flangeand the inner wall of the recess and extending up to a point below theupper face of the bobbin flange. .To enable the invention to be fullyunderstood it will now be described by reference to the accompanyingdrawings which show the invention applied to a flyer spinning frame.

Fig. 1 is a'vertical transverse section of one side of a multi-spindleflyer spinning frame showing part of the dofling mechanism, with anempty bobbin in the spinning position before the severbin holder inposition on the spindle of the spinning frame, and

Figs. 6 and 7 are plan views of details of the yarn guiding meansapplied to the bobbin holder ccording to the invention;

Fig. 8 is an elevation of the lower part of a modified form of bobbin.

Referring to Fig. l. the spinning frame illustrated is of known type andis divided into units containing twelve spindles each, the spindles (notshown) being mounted on a builder Ill supported on a carrier H. A bobbin12, mounted on a holder, is placed on each spindle and yarn drawn from aroving bobbin [3 is passed to a flyer H (one for each spindle) which isdriven by the belt Hi from the usual source of power. In operation, theflyers rotate about fixed points and the builder H3 is moved slowly upand down so that the yarn is built up on each bobbin by the respectiveflyer l4 until the bobbins are filled. The bobbin holders rotate underthe drag on the yarn produced by the flyers.

Arranged beneath the builder carrier H is a dofling arrangement whichcomprises end discs it (one only being shown) mounted on a rotary shaftH, the discs being fitted with means for holding a builder carryingempty bobbins and for receiving and holding a builder carrying thebobbins just filled which is lowered from the spinning position, theframe being stopped. This domng mechanism forms no part of the presentinvention, the action being briefly as follows: In the position shown inFig. 1, the builder ill is in spinning position having been loaded withempty bobbins l2 and raised. In the dofling arrangement below a builderl8 carrying the previously filled bobbins 19 has been lowered intoposition, the yarn A being still under control of the flyers l4 andabout to be wound round the bobbins I2. The frame is then restartedslowly, to wind yarn A from bobbins 19 onto bobbins l2 to obtain a starton the bobbins l3. At this point the'f-rame is again stopped, connectingyarn A is slashed and the frame restarted. Filled bobbins !9 are thenremoved and replaced by empty bobbins. When the bobbins i2 are almostfull the set of empty bobbins 20 on a builder 2| are moved by rotationof the shaft I! to position 20a, this action simultaneously bringing thedofling device into position to receive the builder in carrying the fullbobbins. The frame is stopped when the bobbins in the spinning positionare full and the builder l0 carrying the filled bobbins is lowered on tothe dofiing device and shaft I1 is rotated to bring the filled bobbinsinto the full line position previously occupied by the bobbins 19, thefresh set of empty bobbins 20 being simultaneously moved into theposition indicated in chain lines, ready for movement up into thespinning position. It is thought that the above brief description of aWell known type of flyer spinning frame will suffice for theunderstanding of the present invention which is concerned with the meansfor producing transfer tails on the bobbins used on the spinning frame.

Referring to Figs. 2 to 4. According to the in: vention, in order toprovide for the automatic formation of a transfer tail; the lower flange22 of each bobbin 23 is formed with an helical groove 24, as shown, thisgroove leads into a circumferential groove 25 on the outer periphery ofthe flange, but this groove 25 is not essential and may be omittedleaving the flange simply with an helical groove'which will then extendfrom the upper edge of the flange to a point adjacent to the base-28iof-the bobbiri=holder-. f -Thebaseifi ise provided wi-thtwosscrevworother pegs flaa arranged on a diameter- -and adaptedto'enter rtwoe correspondingholes for-med um thetundersideeoi thehase oftlie bobbin te holdgthe latten in -posi-a $1011:

-Referring again: td --Eigs-:- 2' to=- 42: A prefer abiymetal cap 3-2havingg; arcentral -hole :-and-= two diametral liolescorrespondingtmtheholesior the pegs -29fa in the base za is rslippedoveri tlieshaft ie 'ofgtlieebobbin holder :theapegsdSh ba/vingbeen-removedirem the base, and then'thecap isetumedtobring thepegholestherein-ante regis-v ter with the holes m-thea base and theepegsarea replaced securing th'ecap --to ti-ie base-a s shown-in Fig: 2.Theeap 32- is formed =witha-recess-33 at the top-to;receive -the base ofthe bobbin; there being awlearance between-;the periphery-oteth'e-s vbase and the wall -'of' -the,-= recess- Fi'g i dl showsa-the bobbm2'3:inclia-in lines in position-om the holderwitlr theme -32 21180preventingthetail frommnwind n e ndill h l position. In ordertog-provider a in guides the pgripheryofthe-capii -is;cut and-slottedfteprovide three limers x," SA Z. W I y The fingers Y and -Z arepreferablyformed'byy slitting partofthetop of the capat 34 and bend 35big in parts of thea slit meta-Ito form-the finger-- Y integral with-the rim of -'the; cap; andi'the fin er- As;shown in-'Figs-. 5T-to fl acutting blad'e di ls--- mounted' fixedly zine-holder 36 on the' sideofthe drag adjuster --plate 31; the heldei -being alsopreferablyyformedwith-a-lip 31 which engages-a;- flange- 38 on the b'ottomof thecap-32"and serves to hold the cap'against "being accidentallypulled'-='oiff when the-=bobbin-is3=removed from -:theh0lder blade. 35 is arrangedwith; itscutting edge facing-fine direction of rotation of*thebobbinholderP-when itrctatesyunderthe action--of-*thefiyerr Thedirection of frotation-isindicated-by; thez arrow in-Figs; -6' and -'I-.I-n-sett-ingupthebobbin on; the-holder'itisimportant that the heli: calgroove 24 -in -;tl xefiange-should'=be -closely-a'd= igselnt to e:= p,of"t e-fin er Y 'o the li?'-' 3" so that the yarn cannot-aenter the secondguiding means immediately-after being; caught-by groove- 24. T he tipofthe finger Yisgpieffirablyslightly" raised above'the level-of'thetop'rim of the cap to ensure that the yarn is,caught .one revolutionafter entering the helical groove 24.

This -can best beseen in Figs. 21 and and -'it will be noted that thetip of tliefingerY:flies-be,-v tween the- :-fi;ngers;-X andzpwithclearances on each side of it. The tip of finger Z is also bentslightly upwardly to leavea:small ,clearance;b'e tweenitr andthe-tipof"fingerfiiY;i To .assis in ssembl n :t bbins cqr ectir a iorloa he caps*32 the 'partsof the bobbins; and capswhich should be inregister may be painted with similar colours or otherwise distinctivelyand similarly marked so that registration is rendered simple and easilyvisible.

Assuming that an empty bobbin and bobbin holder constructed as abovedescribed with reference to Figs. 2 to 7 of the drawings is inthe'spinning position occupied by the empty bobbin I2 windrtheeyarndw 1it movinetupeandldown.andtalsq e ti! holden;

Ase-.theabobbm..;rotates 11 .6?

iss iie 1 a se zo vthe ,ob bin-:r whichvcauses:itzttwigs.lmlillditheemlip oiatherflange and y.vhen. .v .-ha..s:s:.0mo1.ctd;9ne round the periphery it reaches the finger the cap 32. Continuedrotation causes;;th wrsli aovertheater; ofzifln eraxibet we i z w i tEimthe -outer.--w.ai1;ofv.theic rhz.l q;thflt she ationtoffitheiyarnriseunder tension-3W1 ch 11,thatlitzwilleeffiectivelrrbeseveredby:th biad Sinceithabobbincontinuesgtolrotat is h portion or :theiyarnznow meetsgthesblad. 3i; nis severed; leaving; astail, gm? ,1 approximately. tn lengthotthe:--circumierence pfithehohbimfian ee 22; Asroiationzcontinuesitheabobhinits 118%; end tor -the ta-il is:drivenzby-icentriiugahiomg 1 der'the fingemZmnd-cannotriseioutaoiehemaehfi21;; and lash abouti v If during the-formationxofrth'etaihpartjoigt e arn -should-pass lunderz-the fiangezof ;thebol1b thisdoesnotafiect: the operatiomasgWhel the; yarnis severed the ip'art..underi-theebebbinnwill.i fermpartot thetail andcannot-ilyouta. Toprevent-:- the =-:yarn passing fan-1 under :;th:r-.- bobbinflangwtherebygeducing-lthe length ofitai that would be normally-available;thesbottonnof the-recess 33-in thecapmay be formedzwithxm I. bossedprojections 39 arranged aszshownjngFigr 4 :;Y which will: project up=,.into; holes} in;-.the.;- bobbins fiangeand act as stops The a.bove=ioperation Of's'lh arrangement; not aifected :by the presence. of: theperipheral; groove 25: in thee bobbinflange anda'the' action is=-asab'ovedes cribed zit said; grooigelis-t=v omitted-:1. Further-- e-modification thex-helical grooves 2 6 is omitted from-the bobbin"flange-and an-ordinaltye. flanged-bobbin is used; Allvtha-t-tisrequiredg -ihv. thismodification is to provide t anifixedxverticai fcatch membem ilipshown ineFig 3pm; thecleaance betweentherflange il' ofthe abobbin'la-ndsthee wall of -the:-recess :3321 This imember 4!?!:extends: up to substantially the level: of: the 1301 3,: ohgthm lower-fl'angeof I:the bobbiniwhent theilatten' in position on: the: holder orit:imay-preferablye. bez slightlylower -than this-level; and '1 posltioned adjacent to the -open-ing .-between heeyarne guiding'fingers 'X,Y, Z in the-cap 32i-as-seenrinz:w Figr- 1. As th'e' bobbin and holderrotate; 38-231 ready described-"above" the yarnwi wh'ich as will be-;-seen-in'-'Fig-ure= l -extends at this timesat an acute; angle--do-vmwards ,to ='thefi'l-led'- bobbin I9, is --caugh=t- -by-=-thecatch-mem-ber 4!? which: causes it to wrap round the flange of thebobbin and to enter between the yarn guiding fingers X, Y, Z by means ofwhich it is guided to the blade 35 and severed, the free end of the tailso formed being held in the cap as in the prex viously describedarrangement. This modified arrangement has the great advantages thatstandard bobbins can be used without any alteration 7 to the senses andthe need to locate the bobbins in particular position on the holder inrelation to the guide fingers of the cap i unnecessary. It will be notedthat inall the arrangements described, according to the invention, theformation of-the transfer tail is entirely automatic and there is nonecessity to stop the frame in order to slash the yarn byhand asheretofore. Further the transfer tail is automatically limited in lengthso that yarn wastage in subsequent operation is minimised, and the tailsecurely held against lashing out and consequent possible destructionunder the action of the centrifugal force.

"I claimr In a device for winding yarn on to bobbins to form yarnpackages having transfer tails and. in combination, means for catchingthe yarn joining an unfilled bobbin in the filling position and a filledbobbin in a dotted position during the rotation of the unfilled bobbinby a yarn winding device and leading the yarn so that it is woundround-the periphery of the base of the unfilled bobbin, a yarn severingdevice, and means mount; ed below the base of the unfilled bobbin for.catching the yarn after it has been wound round the base of the bobbinand leading it under tension to the severing device so that it issevered.

-2. In a device for winding yarn on to bobbins to form yarn packageshaving transfer tails and in combination, a bobbin holder, a bobbin, aflange on the base of the bobbin, a helical groove in the periphery ofthe bobbin flange extending partially across the flange, a source ofyarn supply, a filling means for drawing the yarn from the supply andwinding it round the bobbin into the helical groove in the flangethereof and thence round the periphery of the flange,a yarn guide-on theholder underneath the base of the bobbin, a fixed cutter blade adjacentto the bobbin holder, means on the yarn. guide for catching the yarnafter it has been wound round the periphery of the bobbin flange andleading it under tension to. the cutter blade so that it is severed.

3. In a device for winding yarn according to claim 2 a peripheral grooveformed on the bobbin flange into which the helical groove leads.

4. In a device forwinding yarn on to bobbins to form yarn packageshaving transfer tails and in combination, a bobbin holder, a bobbin, aflange on the base of the bobbin, a helical groove in the periphery ofthe bobbin flange extending partiallyacross the periphery, a source ofyarn supply. a'filling means for drawing yarn from the supply. andwinding it round the bobbin into the helical groove in the flange andthence round the periphery of the flange, a cap secured to the bobbinholder beneath the bobbin, a recess in the top of the cap to receive thebase of the bobbin, guide fingers formed in the periphery of the cap,acutter blade fixed beneath the cap, the guide fingerson the cap beingarranged to catch the yarn after it has been wound round the peripheryof the bobbin flange and to present it under tension to the fixed cutterblade so that it is severed.

5. In a device for winding yarn according to claim 4 an arrangementwherein the guide fingers 8.. on the cap are also arranged to hold downthe severed end of the yarn so that it cannot fly outwards and unwindfrom the bobbin.

6. In a device for winding yarn accordingto claim 4, the provision of acutting blade mounted fixedly in a holder adjacent to the base of thebobbin holder and a peripheral flange at the bot.-

tom of the cap, the holder also being formed with a lip which engagessaid peripheral flange to hold the latter against accidental removal. .7

.7. In a device for windingyarn according to claim 4, the provision onthe bottom of the re cess in the top of the cap of a series ofprojections for preventing the yarn from being dragged far towards thespindle beneath the flange of the bobbin during the formation of thetransfer tail.

8. In a yarn support adapted to receive a transfer tail, the combinationof a base flange on s idv yarn support, a holder on which the support ismountedand a yarn guide comprising fingers formed integrally with theperiphery of the base of the holder said fingers being shaped tocat'ch 1yarn wound around said base flange. l

9. Ina yarn support adapted to receive altrans fer tailthe combination"of a base flange on said yarn support, a, holder on which the support ismounted, a yarnguide cap mounted on said.

holder, and yarn. guiding fingers formed by cutting and bending portionsof the periphery of the cap said fingers being shaped to catch yarnwound round said base flange. Y 7 a g 10. In a device for winding yarnonto bobbins toform yarn packages having transfer tails and incombination, a bobbin holder, a bobbin, a flange on the base of thebobbin, a source of yarn supply,,a filling means fordrawing yarn fromthe supply and winding it around the periphery of the flange on the baseof the bobbin, 3, cap secured to the bobbin holder beneath the bobbin, arecess in the top of the cap to receive the base of the bobbin andproviding a clearance between its inner wall and the flange of thebobbin, guide fingers formed in the periphery of the cap, a cutter bladefixed beneath the cap, a, fixed vertical catchmember disposed in theclearance between the flange of the bobbin and the inner wall of therecess in the top of the cap, said member extending up to substantiallythe level of the top of the lower flange of the bobbin when the latteris in position on the holder and being positioned adjacent to theopenings between yarn guiding fingers in the cap, said guiding fingersbeing arranged to catch the yarn-after it has been wound- REFERENCESCITED The following references are of record in the file ofthis-patent:.

UNITED STATES PATENTS Number Name Date 594,989 Finn Dec. 7, 18971,881,383 Wylie Oct. 4, 1932 2,261,239

lillvin et a1 NOV. 4.1941

